While all the candidates were busy recruiting their subordinates, all the overseers were keeping a close eye on them. Obviously the candidates mentioned in the prior meeting were getting a bit more attention than other participants but all the overseers were trying to observe all of the participants somewhat equally. For powerhouses like them, doing so was not anything difficult so they were easily able to do that.
This was an important part of the trial. Seeing how the participants were recruiting subordinates was very important as in this process, they would be able to see the mentality of the participants. If someone was trying to force people to become their subordinate or was promising then something that they were not planning to fulfil in the future, then those candidates were definitely not suited for the city lord role.